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https://github.com/lwip-tcpip/lwip.git
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PPP, IPV6CP, build out IPv6 VJ support using the existing IPV6CP_COMP define
This commit is contained in:
Sylvain Rochet
parent
99bcce7892
commit
1dd050aaca
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@ -150,7 +150,9 @@
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* Options.
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*/
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#define CI_IFACEID 1 /* Interface Identifier */
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#ifdef IPV6CP_COMP
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#define CI_COMPRESSTYPE 2 /* Compression Type */
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#endif /* IPV6CP_COMP */
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/* No compression types yet defined.
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*#define IPV6CP_COMP 0x004f
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@ -165,9 +167,13 @@ typedef struct ipv6cp_options {
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#if 0
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unsigned int use_persistent :1; /* use uniquely persistent value for address */
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#endif
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#ifdef IPV6CP_COMP
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unsigned int neg_vj :1; /* Van Jacobson Compression? */
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unsigned int :1; /* 1 bit of padding to round out to 8 bits */
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#endif /* IPV6CP_COMP */
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unsigned int :2; /* 2 bit of padding to round out to 8 bits */
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#ifdef IPV6CP_COMP
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u_short vj_protocol; /* protocol value to use in VJ option */
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#endif /* IPV6CP_COMP */
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eui64_t ourid, hisid; /* Interface identifiers */
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} ipv6cp_options;
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@ -528,11 +528,16 @@ static int ipv6cp_cilen(fsm *f) {
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ppp_pcb *pcb = f->pcb;
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ipv6cp_options *go = &pcb->ipv6cp_gotoptions;
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#ifdef IPV6CP_COMP
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#define LENCIVJ(neg) (neg ? CILEN_COMPRESS : 0)
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#endif /* IPV6CP_COMP */
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#define LENCIIFACEID(neg) (neg ? CILEN_IFACEID : 0)
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return (LENCIIFACEID(go->neg_ifaceid) +
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LENCIVJ(go->neg_vj));
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#ifdef IPV6CP_COMP
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LENCIVJ(go->neg_vj) +
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#endif /* IPV6CP_COMP */
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0);
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}
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@ -544,6 +549,7 @@ static void ipv6cp_addci(fsm *f, u_char *ucp, int *lenp) {
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ipv6cp_options *go = &pcb->ipv6cp_gotoptions;
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int len = *lenp;
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#ifdef IPV6CP_COMP
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#define ADDCIVJ(opt, neg, val) \
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if (neg) { \
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int vjlen = CILEN_COMPRESS; \
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@ -555,6 +561,7 @@ static void ipv6cp_addci(fsm *f, u_char *ucp, int *lenp) {
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} else \
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neg = 0; \
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}
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#endif /* IPV6CP_COMP */
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#define ADDCIIFACEID(opt, neg, val1) \
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if (neg) { \
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@ -570,7 +577,9 @@ static void ipv6cp_addci(fsm *f, u_char *ucp, int *lenp) {
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ADDCIIFACEID(CI_IFACEID, go->neg_ifaceid, go->ourid);
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#ifdef IPV6CP_COMP
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ADDCIVJ(CI_COMPRESSTYPE, go->neg_vj, go->vj_protocol);
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#endif /* IPV6CP_COMP */
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*lenp -= len;
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}
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@ -586,7 +595,10 @@ static void ipv6cp_addci(fsm *f, u_char *ucp, int *lenp) {
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static int ipv6cp_ackci(fsm *f, u_char *p, int len) {
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ppp_pcb *pcb = f->pcb;
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ipv6cp_options *go = &pcb->ipv6cp_gotoptions;
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u_short cilen, citype, cishort;
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u_short cilen, citype;
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#ifdef IPV6CP_COMP
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u_short cishort;
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#endif /* IPV6CP_COMP */
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eui64_t ifaceid;
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/*
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@ -595,6 +607,7 @@ static int ipv6cp_ackci(fsm *f, u_char *p, int len) {
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* If we find any deviations, then this packet is bad.
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*/
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#ifdef IPV6CP_COMP
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#define ACKCIVJ(opt, neg, val) \
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if (neg) { \
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int vjlen = CILEN_COMPRESS; \
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@ -609,6 +622,7 @@ static int ipv6cp_ackci(fsm *f, u_char *p, int len) {
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if (cishort != val) \
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goto bad; \
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}
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#endif /* IPV6CP_COMP */
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#define ACKCIIFACEID(opt, neg, val1) \
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if (neg) { \
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@ -627,7 +641,9 @@ static int ipv6cp_ackci(fsm *f, u_char *p, int len) {
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ACKCIIFACEID(CI_IFACEID, go->neg_ifaceid, go->ourid);
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#ifdef IPV6CP_COMP
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ACKCIVJ(CI_COMPRESSTYPE, go->neg_vj, go->vj_protocol);
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#endif /* IPV6CP_COMP */
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/*
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* If there are any remaining CIs, then this packet is bad.
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@ -654,7 +670,9 @@ static int ipv6cp_nakci(fsm *f, u_char *p, int len, int treat_as_reject) {
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ppp_pcb *pcb = f->pcb;
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ipv6cp_options *go = &pcb->ipv6cp_gotoptions;
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u_char citype, cilen, *next;
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#ifdef IPV6CP_COMP
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u_short cishort;
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#endif /* IPV6CP_COMP */
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eui64_t ifaceid;
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ipv6cp_options no; /* options we've seen Naks for */
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ipv6cp_options try_; /* options to request next time */
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@ -679,6 +697,7 @@ static int ipv6cp_nakci(fsm *f, u_char *p, int len, int treat_as_reject) {
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code \
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}
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#ifdef IPV6CP_COMP
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#define NAKCIVJ(opt, neg, code) \
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if (go->neg && \
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((cilen = p[1]) == CILEN_COMPRESS) && \
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@ -690,6 +709,7 @@ static int ipv6cp_nakci(fsm *f, u_char *p, int len, int treat_as_reject) {
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no.neg = 1; \
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code \
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}
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#endif /* IPV6CP_COMP */
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/*
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* Accept the peer's idea of {our,his} interface identifier, if different
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@ -717,13 +737,7 @@ static int ipv6cp_nakci(fsm *f, u_char *p, int len, int treat_as_reject) {
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}
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}
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);
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#else
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NAKCIVJ(CI_COMPRESSTYPE, neg_vj,
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{
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try_.neg_vj = 0;
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}
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);
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#endif
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#endif /* IPV6CP_COMP */
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/*
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* There may be remaining CIs, if the peer is requesting negotiation
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@ -739,12 +753,14 @@ static int ipv6cp_nakci(fsm *f, u_char *p, int len, int treat_as_reject) {
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next = p + cilen - 2;
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switch (citype) {
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#ifdef IPV6CP_COMP
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case CI_COMPRESSTYPE:
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if (go->neg_vj || no.neg_vj ||
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(cilen != CILEN_COMPRESS))
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goto bad;
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no.neg_vj = 1;
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break;
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#endif /* IPV6CP_COMP */
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case CI_IFACEID:
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if (go->neg_ifaceid || no.neg_ifaceid || cilen != CILEN_IFACEID)
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goto bad;
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@ -789,7 +805,9 @@ static int ipv6cp_rejci(fsm *f, u_char *p, int len) {
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ppp_pcb *pcb = f->pcb;
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ipv6cp_options *go = &pcb->ipv6cp_gotoptions;
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u_char cilen;
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#ifdef IPV6CP_COMP
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u_short cishort;
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#endif /* IPV6CP_COMP */
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eui64_t ifaceid;
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ipv6cp_options try_; /* options to request next time */
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@ -813,6 +831,7 @@ static int ipv6cp_rejci(fsm *f, u_char *p, int len) {
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try_.neg = 0; \
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}
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#ifdef IPV6CP_COMP
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#define REJCIVJ(opt, neg, val) \
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if (go->neg && \
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p[1] == CILEN_COMPRESS && \
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@ -826,10 +845,13 @@ static int ipv6cp_rejci(fsm *f, u_char *p, int len) {
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goto bad; \
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try_.neg = 0; \
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}
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#endif /* IPV6CP_COMP */
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REJCIIFACEID(CI_IFACEID, neg_ifaceid, go->ourid);
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#ifdef IPV6CP_COMP
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REJCIVJ(CI_COMPRESSTYPE, neg_vj, go->vj_protocol);
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#endif /* IPV6CP_COMP */
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/*
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* If there are any remaining CIs, then this packet is bad.
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@ -868,7 +890,9 @@ static int ipv6cp_reqci(fsm *f, u_char *inp, int *len, int reject_if_disagree) {
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ipv6cp_options *go = &pcb->ipv6cp_gotoptions;
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u_char *cip, *next; /* Pointer to current and next CIs */
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u_short cilen, citype; /* Parsed len, type */
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#ifdef IPV6CP_COMP
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u_short cishort; /* Parsed short value */
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#endif /* IPV6CP_COMP */
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eui64_t ifaceid; /* Parsed interface identifier */
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int rc = CONFACK; /* Final packet return code */
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int orc; /* Individual option return code */
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@ -950,6 +974,7 @@ static int ipv6cp_reqci(fsm *f, u_char *inp, int *len, int reject_if_disagree) {
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ho->hisid = ifaceid;
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break;
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#ifdef IPV6CP_COMP
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case CI_COMPRESSTYPE:
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IPV6CPDEBUG(("ipv6cp: received COMPRESSTYPE "));
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if (!ao->neg_vj ||
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@ -959,6 +984,7 @@ static int ipv6cp_reqci(fsm *f, u_char *inp, int *len, int reject_if_disagree) {
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}
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GETSHORT(cishort, p);
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IPV6CPDEBUG(("(%d)", cishort));
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#endif /* IPV6CP_COMP */
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#ifdef IPV6CP_COMP
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if (!(cishort == IPV6CP_COMP)) {
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